/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/TaperedCylinder.h
Find the closest point on the surface, and return the separating distance and axis.
virtual [FReal](API\Runtime\ChaosCore\Chaos\FReal) PhiWithNormal ( const [FVec3](API\Runtime\ChaosCore\Chaos\FVec3) & x, [FVec3](API\Runtime\ChaosCore\Chaos\FVec3) & Normal ) const